| 王琼瑶,李森,周玲,王贵胤,张楚儿,张世熔.猪粪-秸秆还田对土壤、作物重金属铜锌积累及环境容量影响研究[J].农业环境科学学报,2016,35(9):1764-1772. |
| 猪粪-秸秆还田对土壤、作物重金属铜锌积累及环境容量影响研究 |
| Accumulation and environmental capacity of Cu and Zn in soil-crop with swine manure applying and straw returning |
| 投稿时间：2016-03-15 |
| DOI：10.11654/jaes.2016-0336 |
| 中文关键词: 猪粪 秸秆 小麦 水稻 铜 锌 环境容量 |
| 英文关键词: swine manure straw wheat rice Cu Zn environmental capacity |
| 基金项目:四川省科技支撑计划项目（2014NZ0044） |
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| 摘要点击次数: 2746 |
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| 中文摘要: |
| 为评价畜禽养殖废弃物和种植业废弃物还田对土壤、作物安全性的影响，通过水稻-小麦轮作田间试验，设置不同猪粪-秸秆还田处理，研究土壤、作物重金属Cu、Zn的含量变化，开展污染评价和农田土壤重金属静态环境容量及猪粪最高施用量研究，以期为养殖业与种植业废弃物的农田利用和农业安全生产提供合理建议。结果表明：在猪粪-秸秆还田下，稻麦两季表层土壤重金属Cu、Zn含量略有升高，但处理间的差异性不显著（P>0.05），且均在土壤环境质量一级标准范围内，土壤地累积指数Igeo均小于0；稻麦籽粒重金属Cu、Zn含量均在食品安全国家标准食品中污染物限量之内，单因子污染指数PI均小于1。因此，猪粪-秸秆还田对土壤、作物的Cu、Zn污染影响不显著。稻麦轮作后，土壤Cu、Zn静态环境容量均降低，最小静态环境容量分别为11.32、135.06 kg·hm-2。综合考虑土壤铜锌的污染安全问题，在稻麦轮作后建议猪粪还田的最高施用量为1 028.77 t·hm-2。 |
| 英文摘要: |
| To assess the security of soil and crop after agricultural waste application, a field experiment under rice-wheat rotation with different swine manure-straw treatments was conducted to evaluate the pollution characteristics and dynamic changes of Cu and Zn in soil-crop, and estimate their static environmental capacity, and the highest application rate of swine manure. The Cu and Zn concentrations in the surface soil among the treatments slightly increased after the swine manure-straw incorperation, and showed no significant differences(P>0.05). Moreover, they in rice and wheat growing season were within the scope of Class Ⅰ of the soil environment quality, and their cumulative indexes(Igeo) were less than zero. In addition, the Cu and Zn concentrations in rice and wheat grain were small than the threshold for the national food safety standards of food contaminants, and the pollution indexes(PI) were less than 1. Therefore, swine manure-straw returning did not have significant effects on the soil and crop. The static environmental capacities of soil Cu and Zn decreased after rice-wheat rotation, and the minimum static environmental capacities were 11.32 and 135.06 kg·hm-2. Considering the Cu and Zn pollution safety problems, we suggest that the application amount of swine manure should be less than 1 028.77 t·hm-2 after rice-wheat rotation. |
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